Crucially, my investigations show that the paparazzi who supposedly hounded Diana to her death were not even in the Pont d’Alma tunnel at the time of the car crash.

They also reveal how a high-powered black motorbike — which did not belong to any of the paparazzi — shot past Diana’s Mercedes in the tunnel.

Eyewitnesses say its rider and pillion passenger deliberately caused the car to crash.

In addition, my inquiries unearthed the existence of a shadowy SAS unit that answers to MI6, as well as the names of two MI6 officers who were linked by a number of sources to Diana’s death.

The saloon tail-gated the Mercedes, which made the chauffeur — thinking, wrongly, he was being pursued by paparazzi — drive even faster and more erratically. Meanwhile, the Uno accelerated, clipping the side of the Mercedes to push it to one side.

This maneuver allowed the black motorbike to speed past Diana’s car, with its two riders wearing helmets that hid their faces.

Witnesses claim that when the bike was about 15ft in front of the car, there was a fierce flash of white light from the motorbike. The suggestion is that this came from a laser beam carried by the pillion passenger and directed at the car.

The witnesses’ view is that the flash of light blinded Henri Paul temporarily. It was followed by a loud bang as the limousine swerved violently before slamming into the 13th pillar in the tunnel and being reduced to a mass of wrecked metal.

One of those eyewitnesses, a French harbour pilot driving ahead of the Mercedes through the tunnel, watched the scene in his rear-view mirror.

Chillingly, he recalls the black motorbike stopping after the crash and one of the riders jumping off the bike before going to peer in the Mercedes window at the passengers.

The rider, who kept his helmet on, then turned to his compatriot on the bike and gave a gesture used informally in the military (where both arms are crossed over the body and then thrown out straight to each side) to indicate ‘mission accomplished’.

[6] Diana death driver’s family delighted at police probe into claims she was murdered by a British soldier: http://www.prisonplanet.com/diana-death-drivers-family-delighted-at-police-probe-into-claims-she-was-murdered-by-a-british-soldier.html